Replace --is_master by --integration

The old option was completely useless: it was ON by default, and had a
flag to set it ON again!

Scripts/developer_scripts/create_new_release

@@ -22,7 +22,7 @@ SOURCES_DIR="$PWD"       # Directory containing the sources, default is "$PWD"
 VERBOSE=""               # Verbose mode (displays log to standard err)
 BETA=""                  #If set, will change the release number and version number accordingly.
 DESTINATION="$PWD"
-IS_MASTER="y"
+INTEGRATION=""
 
 SOURCES_DIR_HAS_BEEN_SET=
 
@@ -45,10 +45,10 @@ usage() {
     printerr '  --no-testsuite   : when used with --do-it, the tag is made, files are published,'
     printerr '                     but the LATEST file is not updated.'
     printerr '  --verbose        : print log to standard output, instead of the log file'
-    printerr '  --beta <n>       : followed by a number. When used with --public, will modify 
+    printerr '  --beta <n>       : followed by a number. When used with --public, will modify
     the release number and the release version name to include beta<n>'
     printerr '  --dest           : followed by the path to where the release should be created. Default is /tmp.'
-    printerr '  --is_master      : replace the Ic in the name by I.'
+    printerr '  --integration    : replace the I in the name by Ic.'
     printerr '  <packages dir>   : the directory containing the packages [default is trunk]'
 }
 
@@ -103,8 +103,8 @@ while [ $1 ]; do
             DESTINATION=$1
             shift;continue
         ;;
-        --is_master)
-            IS_MASTER="y"
+        --integration)
+            INTEGRATION="y"
             shift;continue
         ;;
         -*)
@@ -116,9 +116,9 @@ while [ $1 ]; do
                 SOURCES_DIR="$1"
                 SOURCES_DIR_HAS_BEEN_SET=y
                 shift; continue
-            elif [ -n "$IS_MASTER" ]; then
+            elif [ -z "$INTEGRATION" ]; then
                 # Compatibility with the old syntax with candidates
-                IS_MASTER=""
+                INTEGRATION="y"
                 shift; continue
             else
                 printerr "Unrecognized option : $1"
@@ -206,7 +206,7 @@ if [ -z "$INTERNAL_NUMBER" ]; then
   INTERNAL_NUMBER=1
 fi
 
-if [ -z "${IS_MASTER}" ]; then
+if [ -n "${INTEGRATION}" ]; then
     INTERNAL_STRING="-Ic-${INTERNAL_NUMBER}"
 else
     INTERNAL_STRING="-I-${INTERNAL_NUMBER}"